Generalized thermodynamics of motility-induced phase separation: phase equilibria, Laplace pressure, and change of ensembles
Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that control...
| Main Authors: | , , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
IOP Publishing
2018-01-01
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| Colecção: | New Journal of Physics |
| Assuntos: | |
| Acesso em linha: | https://doi.org/10.1088/1367-2630/aaccdd |
| Resumo: | Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that controls finite-size corrections to coexisting densities, and generalized forces, that can be used to construct new thermodynamic ensembles. Our framework is based on a non-equilibrium generalization of the Cahn–Hilliard equation and we discuss its application to active particles interacting either via quorum-sensing interactions or directly through pairwise forces. |
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| ISSN: | 1367-2630 |